Energy-saving plan

ABSTRACT

An energy-saving pan which is characterized in a bottom with a plurality of lattices, a plurality of radial fins, a plurality of spiral fins, a plurality of L-shaped protuberances, or a plurality of cylindrical pins thereby increasing heat absorbing area of said bottom and reducing reflection of heat energy.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention is related to an improvement in the structure of a pan, and in particular to one which is energy saving.

2. Description of the Prior Art

Recently, all countries in the world advocate the goal of saving energy by increasing the energy efficiency. The commonly used pan (see FIGS. 1 and 2) is very low in heat efficiency, thereby requiring a long time to cook the food thoroughly. The conventional pan has a flat and smooth bottom so that the area of the conventional pan subject to heat is small and most of the heat energy is reflected away by the flat and smooth bottom thus lowering the heat efficiency.

Therefore, it is an object of the present invention to provide an improved cooking pan which can obviate and mitigate the above-mentioned drawbacks.

SUMMARY OF THE INVENTION

In order to overcome the drawback of the conventional pan, the present invention utilizes the increase of the heat absorbing area to enhance the heat efficiency of a cooking pan.

According to the present invention, the energy saving pan has a bottom which is configured to provide lattices, radial fins, spiral fins, L-shaped protuberances or cylindrical pins to increase the heat absorbing area

As compared with the conventional cooking pan, the present invention has a bottom which is provided with lattices, radial fins, spiral fins, L-shaped protuberances or cylindrical pins thereby providing the bottom with a larger heat absorbing area and reducing the reflection of heat energy from the bottom, and therefore increasing the heat efficiency and saving energy.

To enable a further understanding of the said objectives and the technological methods of the invention herein, the brief description of the drawings below is followed by the detailed description of the preferred embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a bottom view of a conventional cooking pan;

FIG. 2 is a sectional view taken along line 2-2 of FIG. 1;

FIG. 3 is a bottom view of an energy saving pan according to a first preferred embodiment of the present invention;

FIG. 4 is a sectional view taken along line 4-4 of FIG. 3;

FIG. 5 is a bottom view of an energy saving pan according to a second preferred embodiment of the present invention;

FIG. 6 is a sectional view taken along line 6-6 of FIG. 5;

FIG. 7 is a bottom view of an energy saving pan according to a third preferred embodiment of the present invention;

FIG. 8 is a sectional view taken along line 8-8 of FIG. 7;

FIG. 9 is a bottom view of an energy saving pan according to a fourth preferred embodiment of the present invention;

FIG. 10 is a sectional view taken along line 10-10 of FIG. 9;

FIG. 11 is a bottom view of an energy saving pan according to a fifth preferred embodiment of the present invention; and

FIG. 12 is a sectional view taken along line 12-12 of FIG. 11.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

FIGS. 3 and 4 illustrate the energy saving pan according to a first preferred embodiment of the present invention. As shown, the bottom of the energy pan is formed with a plurality of lattices thereby increasing the heat absorbing area and reducing the reflection of heat energy.

FIGS. 5 and 6 illustrate the energy saving pan according to a second preferred embodiment of the present invention. As shown, the bottom of the energy pan is formed with a plurality of radial fins thereby increasing the heat absorbing area and reducing the reflection of heat energy.

FIGS. 7 and 8 illustrate the energy saving pan according to a third preferred embodiment of the present invention. As shown, the bottom of the energy pan is formed with a plurality of spiral fins thereby increasing the heat absorbing area and reducing the reflection of heat energy.

FIGS. 9 and 10 illustrate the energy saving pan according to a fourth preferred embodiment of the present invention. As shown, the bottom of the energy pan is formed with a plurality of L-shaped protuberances thereby increasing the heat absorbing area and reducing the reflection of heat energy.

FIGS. 11 and 12 illustrate the energy saving pan according to a fifth preferred embodiment of the present invention. As shown, the bottom of the energy pan is formed with a plurality of cylindrical pins thereby increasing the heat absorbing area and reducing the reflection of heat energy.

The experimental data of the energy saving pans with different bottom structures are listed in the following table:

Energy saving experiments at room temperature 20° C. Ratio of Surface area of the Increasing Increasing Increasing The time reduced for energy-saving water water water increasing water pan to the Average temperature temperature temperature temperature as Weight conventional Thickness to 50° C. to 80° C. to 100° C. compared to the NO. (g) pan (um) time time time conventional pan 1 Conventional 384 23.8 1′42″ 4′01″ 7′49″ pan 2 530 1.82 17.2 1′44″ 3′45″ 6′16″ 24.70% 3 560 1.46 21 1′45″ 3′45″ 6′14″ 25.40% 4 604 1.85 26.8 1′32″ 3′47″ 6′07″ 27.20% 5 470 1.34 21.4 1′13″ 3′36″ 6′07″ 27.70% 6 515 1.69 22 1′32″ 3′42″ 6′06″ 28.10% 

1. An energy-saving pan having a bottom with a plurality of lattices, a plurality of radial fins, a plurality of spiral fins, a plurality of L-shaped protuberances, or a plurality of cylindrical pins thereby increasing heat absorbing area of said bottom and reducing reflection of heat energy. 